No
Referring to interviewers by name is a curious Americanism which almost never comes up in British conversation, and using someone’s name tends to be regarded as being over-familiar. You are simply responding to direct questions.
This is unlikely, but in terms of icebreakers you might want to have something to say about why you are so interested in going to the UK and Cambridge in particular, because they often are concerned that US students will turn down an offer in favor of staying in the US.
Yes. Quite abruptly in a way which might seem rude to some.
They will gently redirect you if you are on the wrong track. But that’s more the case when there is a definitively correct answer (eg an economics question). You will get encouragement if you are on the right track and usually the questions are multi-part where the next part depends on getting to the right answer on the previous part.
In an academic sense it is ok to think that say philosopher A’s views make more sense than philosopher B’s. Try to frame your dislike for B with a contrasting view of A.
You’ll find the interview terminates abruptly and is not full of the social niceties in US Ivy interviews. They want to see if you can answer questions, understand their feedback and take that into account in your responses.